Young in early 60's. I was still jogging a 10 kilometer run on each birthday 55, 56, 57, up to maybe 63??
Now my current each day log shows I have walked most every fall, winter, spring day since April, 2019.
Each page of my log has 27 lines (one day, one line). I just completed page 43.
27 times 43 equals something over 1140 days of walking.
